The Hydro Lite 3.0 Hydration Pack by Deuter is ultra lightweight and can hold up to 3 liters of water. With the minimalist in mind, the Hydro Lite allows for fast 'drop in' loading;of the bladder and drink tube for on the go fill up. Airstripes ventilation gives the rider 80% air flow through the back, cooling the body and keeping fatigue down to a minimum. The hydration compartment is insulated with a reflective foil keeping your drink cool or from freezing, depending on the weather.